The compression design means there is no trim ring to install — no drilling, screwing or sealing.
The deckplate consists of the top plate, with its integrated gasket, a compression bar that tilts in behind the mounting surface, and a compression screw that makes the seal — all integrated into one unit.

• Completely watertight; patented design loads the deck plate at the center for a tight, uniform seal — reduces warranty claims and replacements seen with other designs
• Easy to install; simple to use — cut the hole, slip the Deck Plate in place, and tighten the "T" handle by hand (a flange centers the deckplate in the hole)
• Easy, tool-free installation
• Easy to use — a turn of the T-handle releases or secures the deck plate
• Won't pop out when hull flexes
• Deck plate and compression fittings are constructed of two different, function-specific, UV stabilized polypropylene alloys
• Available in round and rectangular models